Abstract
The superiority and tolerability of daratumumab plus bortezomib/melphalan/prednisone (D-VMP) versus bortezomib/melphalan/prednisone (VMP) in transplant-ineligible patients with newly diagnosed multiple myeloma (NDMM) was previously described in the global phase 3 ALCYONE study. The primary analysis of the phase 3 OCTANS study further demonstrated the superiority and tolerability of D-VMP (n = 144) versus VMP (n = 71) in transplant-ineligible Asian patients with NDMM. The current analysis describes the final efficacy and safety outcomes for D-VMP versus VMP in OCTANS, with a follow-up of > 3 years. D-VMP demonstrated a benefit versus VMP with regard to the rate of very good partial response or better (80.1% vs. 47.3%), median progression-free survival (38.7 vs. 19.2 months), median time to next treatment (46.8 vs. 20.6 months), rate of complete response or better (46.6% vs. 18.9%), median duration of response (41.3 vs. 18.5 months), achievement of minimal residual disease (MRD) negativity (40.4% vs. 10.8%), and sustained MRD negativity for ≥ 12 months (24.7% vs. 1.4%) and ≥ 18 months (15.1% vs. 1.4%). Median progression-free survival was longer among patients who achieved MRD negativity and sustained MRD negativity. The progression-free survival benefit observed with D-VMP was preserved across most clinically relevant subgroups, including patients with high-risk cytogenetics. No new safety concerns were identified with extended follow-up. This final analysis of OCTANS continues to demonstrate a clinical benefit for D-VMP versus VMP in transplant-ineligible Asian patients with NDMM, consistent with the global ALCYONE study, and supports the use of daratumumab combinations in this population. Trial registration: ClinicalTrials.gov Identifier NCT03217812 submitted July 13, 2017.
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